High blood pressure is called the "silent killer" because it has no symptoms. If high blood pressure remains unchecked, it can lead to stroke, heart attack, heart failure, and more. You can stop this silent killer — if you catch it in time.

Chronic obstructive pulmonary disease (COPD) is a name given to a group of diseases that limit the flow of air in and out of your lungs. COPD includes chronic bronchitis and emphysema. Long-time cigarette smoking is the most common cause of COPD.